Subject: 2.5m obslog 20140816 (MJD 56886)
From: kpan@apo.nmsu.edu
Date: Sun, 17 Aug 2014 03:56:16 +0000 (UTC)
                       APACHE POINT OBSERVATORY SDSS 2.5M
                                 OBSERVING LOG
                          Saturday August 16, 2014
                                  (MJD 56886)
----  Observing Team ----
Kaike Pan
---- Observing Plan ----
Checkout BOSS spectro
---- Observing Summary ----
SP2 collimator was homed and zeroed at the lower limit. SP1 actuator A and B
don't move in either direction. I will continue the checkout if they are fixed
tomorrow.
Database is not ready yet: loadCartridge doesn't work at this point, John P.
is working on it, and planing to get it work by tomorrow.
---- Observing Log ----
Checkout BOSS spectro
=====================
Check bias and dark:
Bias: 182279
90 sec dark: 182280
Visual check on bias:
bias level frame 181826 on mjd 56841 (before the shutdown) vs. frame: 182279:
B1: 181826: ~2170, 2300, 2205, 2135 vs. 182279: ~ 2165, 2296, 2205, 2128
R1: 181826:~ 2474, 2760, 2420, 2668 vs. 182279: ~ 2430, 2700, 2377, 2600
B2: 181826: ~2000, 2095, 2133, 2090  vs.182279: ~ 1995, 2090, 2130, 2085
R2: 181826: ~2681, 2455, 2603, 2443  vs.182279: ~ 2675, 2445, 2595, 2440
R2 Hot column at column 570 became narrower, from 10 columns to 5 columns.
R2 hot column at 4240 almost disappeared.
Home collimator:
02:54:13 APO.kpan 30 boss i text="remaining move: [1000, 1000, 0]"
02:54:13 APO.kpan 30 boss w text="stopped a move -- too many tries.
requested=1000 moved=0 "
02:54:13 APO.kpan 30 boss w text="stopped b move -- too many tries.
requested=1000 moved=0 "
Looks like that actuator A and B on SP1 are not communicating or powered
up, they would not move in either direction.
Took a set of flat and arc, they look fine although I could not focus SP1
because collimator actuator A and B could not be moved.